Name: Sausage & Croissant Breakfast Casserole Recipe
Prep time: 15 min
Cook time: 40 min
Total time: 55 min
Cuisine: American
Ingredients: 1 pound breakfast sausage; 4 large croissants, torn into bite-size pieces; 8 large eggs; 1½ cups milk or half-and-half; 1 teaspoon salt; ½ teaspoon black pepper; ½ teaspoon garlic powder; ½ teaspoon onion powder; 2 cups shredded cheddar cheese; 1 cup shredded mozzarella or Monterey Jack cheese; ¼ cup green onions, sliced

Jump to Recipe· 3.8 from 75 reviews

If you’re searching for a breakfast dish that brings together buttery, flaky croissants with savory sausage and melty cheese, you’ve just found your new favorite. This Sausage & Croissant Breakfast Casserole Recipe is everything you want on a morning when comfort food calls your name. It’s fluffy, indulgent, and comes together in a breeze, making it perfect for holiday mornings, weekend brunches, or any day you want to wow your loved ones with minimal effort and maximum flavor.

Ingredients You’ll Need

The image shows a white marbled surface with several groups of ingredients spread out. There is a white plate filled with five golden brown croissants in the lower left corner. Nearby, a white bowl holds ground cooked meat with a dark brown color. A small clear glass contains olive oil, and a larger clear bowl with yellow scrambled eggs is next to it. Another white plate has finely chopped red tomatoes, green bell peppers, and white onions layered closely together. A small glass of milk and a boxed block of white cream cheese sit close by, completing the arrangement. Photo taken with an iphone --ar 4:5 --v 7

Don’t be intimidated by breakfast casseroles—they’re often just a handful of simple ingredients working in harmony. Each item here plays a vital role, whether it’s the richness of eggs, the perfectly crisp croissants, or the gooey melted cheese bringing it all together.

Breakfast sausage: Adds a delicious savory depth and protein-packed hearty flavor to every bite.
Croissants: Use flaky, buttery croissants torn into pieces to create a soft, tender base with wonderful texture.
Eggs: The binder that holds the casserole together while making it fluffy and full-bodied.
Milk or half-and-half: Adds creaminess to the egg mixture, ensuring a silky custard-like consistency.
Salt and black pepper: Essential seasonings that enhance all the other flavors without overpowering.
Garlic powder: A subtle kick that layers in warmth and complexity.
Onion powder: Brings mellow savory notes that marry perfectly with the sausage.
Cheddar cheese: Sharp and melty, it gives the casserole that irresistible golden crust and cheesy goodness.
Mozzarella or Monterey Jack cheese: Adds extra meltiness and creamy texture that balances sharp cheddar.
Green onions: Freshly sliced for a bright, oniony garnish that adds color and freshness.

How to Make Sausage & Croissant Breakfast Casserole Recipe

Step 1: Prepare Your Sausage

Start by browning the breakfast sausage over medium heat in a skillet. Cook it until it’s nicely browned and cooked through, then drain off any excess grease. This step is crucial because the flavorful sausage forms the savory foundation of the casserole that permeates every bite.

Step 2: Assemble the Base

Grease a 9×13-inch baking dish to prevent sticking. Then, tear your croissants into bite-size pieces and spread them evenly in the dish. The croissants will soak up the egg mixture and sausage drippings, giving you pockets of buttery, tender bread throughout.

Step 3: Layer the Sausage

Scatter the cooked sausage evenly over the croissants. This ensures every forkful gets that wonderful meaty flavor, balancing the soft richness of the croissants.

Step 4: Whisk the Egg Mixture

In a large bowl, whisk together eggs, milk or half-and-half, salt, pepper, garlic powder, and onion powder until smooth and well combined. This mixture is the custard that binds everything, providing creaminess and fluffiness to your breakfast casserole.

Step 5: Combine and Top with Cheese

Pour the egg mixture evenly over the croissants and sausage, allowing it to soak through all the layers. Then sprinkle your shredded cheddar and mozzarella cheeses on top. Don’t be shy here—extra cheese means extra indulgence.

Step 6: Bake to Perfection

Bake uncovered in a preheated 375°F (190°C) oven for 35–40 minutes. You want to see the eggs set firmly and the cheese on top turn golden brown and bubbling. Once out of the oven, let it rest for about 5 minutes—this helps all the flavors settle and makes it easier to slice.

How to Serve Sausage & Croissant Breakfast Casserole Recipe

Sausage & Croissant Breakfast Casserole Recipe - Recipe Image

Garnishes

Freshly sliced green onions sprinkled on top add the perfect pop of color and a gentle sharpness that cuts through the richness. You can also add a dollop of sour cream or a handful of fresh herbs like parsley or chives to brighten it up further.

Side Dishes

This casserole pairs beautifully with light, fresh sides that balance its richness. Think mixed berries, fresh fruit salad, or even a simple baby spinach salad with a tangy vinaigrette. Crispy breakfast potatoes or a side of roasted vegetables can add some extra texture and heartiness.

Creative Ways to Present

Want to jazz things up? Serve individual portions in mini ramekins for a charming brunch presentation. You can also add a drizzle of hot sauce or maple syrup on the side for guests who like a little sweet and heat contrast. For holiday tables, garnish with edible flowers or vibrant microgreens for an elegant touch.

Make Ahead and Storage

Storing Leftovers

Store any leftovers in an airtight container in the refrigerator. This casserole stays fresh and tasty for up to 4 days, making it perfect for quick breakfasts during busy mornings.

Freezing

If you want to make this ahead even further, the casserole freezes beautifully. Wrap tightly in plastic wrap and foil, then freeze for up to 2 months. When you’re ready, thaw overnight in the fridge before reheating.

Reheating

Reheat individual servings in the microwave for about 1 to 2 minutes or until warmed throughout. You can also reheat the entire casserole in a 350°F (175°C) oven, covered, for about 20 minutes or until heated through, which helps keep the texture nice and fluffy.

FAQs

Can I substitute the sausage with another meat?

Absolutely! You can swap out sausage for diced ham, cooked bacon, or even turkey sausage depending on your preference. Each brings a slightly different flavor profile but maintains the hearty feel of the casserole.

Is it possible to make this casserole vegetarian?

Yes! Simply replace the sausage with your favorite sautéed vegetables like mushrooms, bell peppers, or spinach. Adding a little smoked paprika or vegan sausage can help maintain that savory depth.

Can I use day-old croissants?

Day-old croissants work even better since they’re less likely to become too mushy when soaking up the egg mixture. Just tear them into pieces as you would fresh croissants.

How long does it take to prepare this dish?

Total time is about 55 minutes—roughly 15 minutes to get everything assembled and another 35 to 40 minutes baking time. It’s a great recipe for having something satisfying on the table without spending all morning in the kitchen.

Can I add vegetables to the casserole?

Definitely! Adding diced bell peppers, spinach, or mushrooms will add freshness, color, and extra nutrition. Just sauté them first to remove excess moisture, so your casserole doesn’t get soggy.

Final Thoughts

Now that you’ve got the scoop on this amazing Sausage & Croissant Breakfast Casserole Recipe, it’s time to get cooking! Whether you’re gathering friends, treating your family, or simply craving a cozy breakfast at home, this dish is sure to impress and satisfy. Trust me, once you try it, it will become a beloved staple in your brunch rotation. Enjoy every buttery, cheesy, sausage-packed bite!